The game show will film a piece of Cleveland history and local workers will be featured.

The show's traveling "clues crew" will be filming clues about submarine history and technology on the USS COD Submarine Memorial, which is docked on the city's North Coast Harbor.

The dozen secret clues will be used in upcoming editions of the show.

They will showcase some of COD's history, and will show firing of a seven-ton deck gun.

To prepare for the Jeopardy crew visit, Paul Farace, the director of the submarine, helped writers refine the clues.

But don't think about asking him for teasers.

Farace says he was sworn to secrecy, and only printed one copy of their questions, which he had to shred.

The film crew will begin shooting Thursday afternoon, and the COD's crew will help serve as reenactors for some segments with demonstrations.

The game show chose COD because it has been highly restored and it has an informational website.

If you want to visit our historic landmark, The U.S.S. COD opens for the season on May 1 and will be open daily until September 30. It's docked on N. Marginal Road between East 9th Street and Burke Lakefront Airport.